Oct 26 (Reuters) - Canada’s main stock index inched lower at the open on Tuesday, weighed by mining stocks, while expectations of a hawkish stance by the Bank of Canada in its meeting later this week further dented sentiment. At 9:33 a.m. ET (13:33 GMT), the Toronto Stock Exchange’s S&P/TSX composite index was down 7.61 points, or 0.04%, at 21,277.23. (Reporting by Amal S in Bengaluru; Editing by Ramakrishnan M.)